Ключевые слова: aged, architecture, big, bolt, brown, chain, concept, construction, danger, dirty, element, equipment, factory, grunge, hardware, head, industry, iron, machine, material, metal, metallic, old, orange, parts, pipe, pipeline, point, pressure, protection, red, rough, rust, rusty, safety, screw, service, shiny, solid, spare, steel, supply, surface, symbol, tool, vintage, water,